Climate Letter #1480

Posted on August 1, 2019 by Carl Campbell
The stepped-up melting of Greenland’s ice sheet has earned a full share of attention this week, so here are links to several stories worth reading, having many quotes from experts who devote their lives to relevant field studies.

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From the Washington Post, via Peter Sinclair’s website: “Greenland Melt Could Break Records.”  Jason Box is among those providing key information.
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Inside Climate News brings us some opinions that are quite troubling, one being especially so. “Somewhere between 1.5 and 2 degrees there’s a tipping point after which it will no longer be possible to maintain the Greenland Ice Sheet,” said Mottram, who is not yet sure about how quickly it would disappear.  Also, “Both Fettweis and Mottram said the extreme melt happening now is something that climate models have not done a good job accounting for…..By mid to end of the century is when we should be seeing these melt levels—not right now…..The models are clearly not able to capture some of these important processes.”
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From Gizmodo, an appraisal of this year’s extraordinary temperatures in the Arctic and the many different connections between critical parts.  For example, the record-breaking wildfires are seen to have a considerable effect on the conditions that influence ice melt.  The Arctic is at least on the threshold of never being the same as it was, with some calling it a tipping point already realized.
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Two standard methods for imaging Greenland’s melt rate are available daily at this site:
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A new study defines health issues caused by extreme events of climate change in Australia and the Asia Pacific region (The Guardian).  There are serious casualties that follow the events over time, these being “deep and insidious secondary impacts” that are seldom recognized in the headlines.  The report was compiled from scientific research recorded in roughly 120 peer-reviewed journal articles
–Separate studies treat the health impacts due to the loss of key nutrients in food supplies as a result of climate change, with some already already having an effect.  Tim Radford provides a summary in Climate News Network.
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A British professor warns against adopting a hopeful attitude toward negative emissions technology. (The Guardian).  He believes that hope is being misused as a stalling tactic.  “While it is true that some negative emissions technologies are practically feasible at modest scales, this knowledge encourages both magical and mendacious thinking. We all want a magic bullet that solves the climate emergency, but negative emissions technologies are not it.”
Carl

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